Need help for upgrade from gradle 6.x to 8.x

What are the recommended steps for upgrading from Gradle 6.x to 8.x?
Are there any specific changes or considerations that we should be aware of before making the upgrade?
What changes should we be aware of, such as compatibility with plugins, configuration files, and build scripts?

General procedure I recommend:

  • Upgrade to latest 6.x
  • Upgrade to latest compatilble versions of plugins you use
  • Fix all Gradle deprecation warinings
  • Upgrade to latest 7.x
  • Upgrade to latest compatilble versions of plugins you use
  • Fix all Gradle deprecation warinings
  • Upgrade to latest 8.x
  • Upgrade to latest compatilble versions of plugins you use

If in the last minor version all deprecation warnings are fixed, you should usually be able to upgrade to the next major version without problems.

Also keep in mind the release notes for the versions for significant updates and additionally the upgrade notes in the userguide where you can find breaking changes.